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7th Grade Test 6 Review

Total questions: 26

Worksheet time: 17mins

Name
Class
Date
1.

Sharks consume smaller fish they catch in the ocean. This is an example of what type of relationship?

a)

predator/prey

b)

parasite/host

c)

producer/consumer

2.
A tapeworm lives in human intestines absorbing the nutrients that would normally be absorbed by the person.  This eventually causes the person to experience health problems.  This relationship is -
a)
predator/prey
b)
parasite/host
c)
herbivore/omnivore
d)
consumer/producer
3.

2. Which of the following statement is true about low biodiversity?

a)

More sustainable environment

b)

Less sustainable environment

c)

High biodiversity

d)

sustainable environment

4.
A species that is critical to the functioning of an ecosystem is called a(n)
a)
endemic species
b)
exotic species
c)
invasive species
d)
keystone species
5.
Which of these actions presents a danger to biodiversity?
a)
protecting individual species
b)
protecting forests and wetlands
c)
preventing industrial wastes from being dumped in the ocean
d)
polluting a stream with used motor oil
6.

_____________ adds chemicals, noise, heat, and light beyond the capacity of the enivornment

a)

Biodiversity

b)

Native Species

c)

Prediation

d)

Pollution

7.

Species in an ecosystem depend on ecosystem services which include... (Select 3)

a)

Maintaining soil

b)

Recycling Nutrients

c)

Disposing Wastes

d)

Excessive Rain

8.
If more than one car is traveling on the road, what kind of pollution would that be?
a)
Non point source pollution
b)
One point source pollution
9.
The sea otter is a(n) ___________ that influences the survival of many other species in its ecosystem.
a)
Cute furry creature
b)
endangered species
c)
keystone species
d)
important animal
10.

Water pollution that is coming out of a pipe from a specific factory would be an example of:

a)

Groundwater Pollution

b)

Non-Point Source Pollution

c)

Point Source Pollution

11.
Cow blood being drained from a slaughterhouse into a river would be an example of:
a)
Groundwater Pollution
b)
Non-Point Source Pollution
c)
Point-Source Pollution
12.

Which organism do the owl and the weasel compete for in the food web?

a)

Hawk

b)

Spider

c)

Grasshopper

d)

Shrew

13.

What is an adaptation?

a)

A feature or behavior that helps an animal survie.

b)

The food that an animal eats.

c)

How energy moves in a food web.

14.

How do adaptations help animals?

a)

To escape animals

b)

to hunt for food

c)

to survive in their habitats

d)

All of these are correct

15.

Two examples of non-native or invasive species would be...

a)

Bald eagles and fish

b)

Kudzu and Pythons

c)

Wild boar and cheatea

16.
The number and variety of different species on Earth is called ______________. 
a)
Biological evolution
b)
Biodiversity
c)
Genetic Variability 
d)
Natural Selection 
17.

Which is a threat to biodiversity...

a)

Decrease use of fossil fuels

b)

Limiting water use

c)

Recycling

d)

deforestation

18.
Most water pollution is the result of
a)
human activities.
b)
drought.
c)
volcanic eruptions.
d)
storms.
19.
The use of pesticides and fertilizers must be carefully monitored 
because of the effect they can have on the environment. 
Which of the following is a possible negative effect of the use 
of these chemicals on the environment?
a)
Runoff carries these chemicals into lakes and streams.
b)
Theses chemicals cannot be purchased in large bulk.
c)

These chemicals are expensive to produce.
d)
Storage space for these chemicals is limited.
20.
Which of the following are both ways to ensure the water supply for the future?
a)
Pollution and enforce conservation and antipollution laws
b)
limit use by individuals and get rid of conservation laws
c)
allow unlimited use of water and enforce only antipollution laws
d)
limit the use of water by individuals and enforce conservation and antipollution laws.
21.

Which list of characteristics describes how animals are classified?

a)

Multicellular, eukaryotic, heterotrophic

b)

Unicellular, eukaryotic, heterotrophic

c)

Multicellular, eukaryotic, autrophic

d)

Unicellular, prokaryotic, autrophic

22.

Which organism would most likely be considered a prokaryote?

a)

an organism that has ribosomes

b)

an organism that has a single, circular DNA

c)

an organism with membrane-bound organelles

d)

an organism whose DNA is enclosed in a membrane

23.
ALL organisms can be divided into two groups.
a)
Prokaryotes and Eukaryotes
b)
Plants and Animals
c)
Us and Them
d)
Hot blooded or Cold Blooded
24.
If an organism is made of only one cell it is said to be...
a)
Eukaryotic
b)
Prokaryotic
c)
Unicellular
d)
Multicellular
25.

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

a)

H3PO4

b)

HClO3

c)

H2SO4

d)

H2O

26.
Floods move _______________
a)
clouds
b)
ecosystems
c)
organisms
d)
hotels

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